This problem gives a list of 32-bit numbers stored in memory.
For each number, we need to:
Swap the upper 16 bits and lower 16 bits
Example:
Input : 0xAAAA5555
Output : 0x5555AAAA
So basically:
Top half ↔ Bottom half (exchange)
What the Program Does
1️Read the list and number of elements (N)
2️Take one number from the list
3️Extract lower 16 bits
ANDI R4, R3, 0xFFFF
4️Move it to upper position
SLL R4, R4, 16
5️Extract upper 16 bits
SRL R5, R3, 16
6️ Clean extra bits
ANDI R5, R5, 0xFFFF
7️ Combine both parts
OR R6, R4, R5
8️Store result back and move to next number
Simple Logic (Easy to Remember)
Lower part → shift left → becomes upper
Upper part → shift right → becomes lower
Combine both → final swapped number
🔹 Summary
“The program swaps the upper and lower 16-bit halves of each 32-bit number in a list using masking and shifting operations.”
